The spectrophotometer is a cost-effective tool that can be used to determine the quantity of samples which absorb or transmit light. Based on absorption or transmittance of light, a correlation can be made to determine the quantity of a substance. The identity of the sample will be determined through other instruments.
A spectrophotometer is a device used to measure light intensity. NASA typically includes a spectrophotometer on their interplanetary landers such as the Spirit and Opportunity rovers. A small beam of light passes through the sample; some of the light is absorbed, but what passes through is detected and measured by the spectrophotometer. We are able to use this information to determine the quantity of a substance.
Our spectrophotometer can be used to determine some enzymatic activities, such as papain and bromelain, or anthocyanidin content in bilberry.
Here is a screen shot of a spectrophotometer graph of a papain sample.